MODE_CENTERED_LINE   69 libavfilter/avf_showwaves.c         { "cline", "draw a centered line for each sample", 0, AV_OPT_TYPE_CONST, {.i64=MODE_CENTERED_LINE}, .flags=FLAGS, .unit="mode"},
MODE_CENTERED_LINE  295 libavfilter/avf_showwaves.c     case MODE_CENTERED_LINE: showwaves->draw_sample = draw_sample_cline; break;